There were no planes around… But in this video clip captures in Sanford, Florida, you clearly hear some strange sounds coming from… probably the sky!  So what are these strange sounds from the sky? University of Saskatchewan physics professor Jean-Pierre St. Maurice explains that it’s electromagnetic noise emitted from auroras and radiation belts.  Geoscientist David Deming from the

University of Oklahoma, meanwhile, has previously written about a phenomenon called The Hum – ‘a mysterious and untraceable sound that is heard in certain locations around the world by two to ten per cent of the population’. Writing in the Journal of Scientific Exploration, he said that sources of The Hum could include telephone transmissions and ‘aircraft operated by the U.S Navy for the purpose of submarine communications’. READ MORE